MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
Effect of Strain on Microstructural Evolution under Warm Deformation in an Ultra-Low Carbon Steel
Joo-Hee KangTadanobu InoueShiro Torizuka
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2009 Volume 50 Issue 1 Pages 34-39

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Abstract

The microstructural evolution was investigated according to the equivalent strain in uniaxial compression using an ultra-low carbon steel. The equivalent strain was quantitatively calculated by using finite element analysis. The microstructure was rapidly refined up to the equivalent strain of 2.4 with the material flow to rolling direction (RD) with the remarkable development of high angle boundaries. At that time, texture such as (001)[110] and (111)[110] significantly developed. Inhomogeneous deformation behavior according to texture was observed; ⟨100⟩||ND was elongated without the development of subgrain even under large strain, but ⟨111⟩||ND was divided into small grains isolated with high angle boundaries.

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© 2009 The Japan Institute of Metals and Materials
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